<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<link rel="stylesheet" href="lib/css/bootstrap.min.css">
<script src="lib/js/jquery.min.js"></script>
<script src="lib/js/popper.min.js"></script>
<script src="lib/js/bootstrap.min.js"></script>
<body>

<div class="container-fluid">
  <div class="row">
    <div class="col-sm-3">.col-sm-3</div>
    <div class="col-sm-3">.col-sm-3</div>
    <div class="col-sm-3">.col-sm-3</div>
    <div class="col-sm-3">.col-sm-3</div>
  </div>
</div>

</body>
</html>
